Algorithm Research Of LFMCW Automotive Radar Signal Processing

With the rapid development of the national economic level, the transportation of people are becoming more and more convenient,economic development has brought convenience to transportation, it also brings some catastrophic problem, that traffic accidents are frequent take place. Today the use of onboard radar can effectively reduce traffic accidents. The core of onboard radar is target matching algorithm, so the good for target matching algorithm of vehicle radar is significant of the accuracy of target tracking. Target matching algorithm is regarded as the key link in radar signal processing, has received more and more the favour of the researchers. While the development of science and technology brought great progress to the hardware,algorithms and computer performance, it also continue to give enormous challenges to matching. So, in national defense, aviation and aerospace and other fields, various new technologies continue to be applied to the target matching in order to adapt to more complex environments and applications. Combining airborne radar target tracking engineering practice, from the perspective of engineering analysis of the key technologies involved.In this paper, according to the LFMCW radar signal processing methods and hardware implementation of the relevant research, combined with the actual needs of LFMCW radar system, responsible for the development of the radar signal processing system. This paper puts forward a multi-objective environment distance speed coupling and introduce new matching algorithm and the coupling problem.Finally, the hardware implementation of the vehicle mounted radar system is introduced, and the matching algorithm is tested and analyzed in the actual environment. The specific content of this article and the results are as follows:1. The research background and the significance of this thesis are briefly introduced, it introduces the research situation of LFMCW radar and radar digital signal processing, not only introduced the development condition of the domestic, and also introduced the development abroad.2. The function of signal processing system is introduced briefly, the main target of the radar system is designed, and the hardware requirement of the signal processing system is introduced. Finally, the signal processing system is designed.3. The emphasis is on the analysis of the basic principle of the algorithm of the OS-CFAR and made some improvements on it.4. Proposed the multi target matching algorithm in complex environment, and the simulation results are analyzed.5. Combined with the overall architecture of the vehicle radar system, the hardware implementation of the system is realized.6. The testing and analysis of the radar system in the actual environment, the focus is to test whether the multiple vehicle radar target detection and tracking ability, effective matching algorithm of multi-objective is introduced in the fourth chapter of the test.